Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404892 | Hydraulic operating apparatus | Ichiro Nakamura, Ken Ichiryu, Yoshimichi Akasaka, Haruo Watanabe | 1983-09-20 |
| 4249641 | Speed control system for hydraulic elevator | Masayuki Shigeta | 1981-02-10 |